.loading 
    position fixed
    top 50%
    left 50%
    margin -14px 0 0 -42px
    padding 10px

.loading-dot 
    float left
    width 6px
    height 6px
    margin 0 3px
    background rgba(255, 255, 255, .5)
    border-radius 50%
    opacity 0
    box-shadow 0 0 2px rgba(0,0,0,.3)
    animation loadingFade 1s infinite

.loading-dot:nth-child(1) 
    animation-delay 0s

.loading-dot:nth-child(2) 
    animation-delay 0.1s


.loading-dot:nth-child(3) 
    animation-delay 0.2s


.loading-dot:nth-child(4) 
    animation-delay 0.3s

@-webkit-keyframes loadingFade
    0%  
      opacity 0
    50%  
      opacity 0.8
    100%  
      opacity 0 
